Use the information for the question(s) below.
Suppose that a young couple has just had their first baby and they wish to ensure that enough money will be available to pay
for their child’s college education. Currently, college tuition, books, fees, and other costs, average $12,500 per year. On
average, tuition and other costs have historically increased at a rate of 4% per year.
Assume that college costs continue to increase an average of 4% per year and that all her college savings are
invested in an account paying 7% interest. Draw a timeline that details the amount of money she will need to
have in the future four each of her four years of her undergraduate education.
Assume that you are 30 years old today, and that you are planning on retiring at age 65. Your current salary is
$45,000 and you expect your salary to increase at a rate of 5% per year as long as you work. To save for your
retirement, you plan on making annual contributions to a retirement account. Your first contribution will be
made on your 31st birthday and will be 8% of this year’s salary. Likewise, you expect to deposit 8% of your
salary each year until you reach age 65. At retirement (age 65) you will begin withdrawing equal annual
payments to pay for your living expenses during retirement (on your 65th birthday). If you expect to die one
day before your 101st birthday (Your last withdraw will be on your 100th birthday) and if the annual rate of
return is 7%, then how much money will you have to spend in each of your golden years of retirement?
How do you calculate (mathematically) the present value of a(n):
(a) perpetuity
(b) annuity
(c) growing perpetuity
(d) growing annuity